いつ発生したかは完全にはわかりませんが、OSX Mountain Lion マシンで自作を実行しようとすると、奇妙なエラーが発生します。
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- checksums (LoadError)
これは、次のコマンドを使用して RVM をインストールしようとして失敗した後に気付きました。
\curl -L https://get.rvm.io | bash -s stable --ruby
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 184 100 184 0 0 136 0 0:00:01 0:00:01 --:--:-- 155
100 13145 100 13145 0 0 6879 0 0:00:01 0:00:01 --:--:-- 6879
Please read and follow further instructions.
Press ENTER to continue.
Downloading RVM from wayneeseguin branch stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 124 100 124 0 0 433 0 --:--:-- --:--:-- --:--:-- 551
100 3263k 100 3263k 0 0 1245k 0 0:00:02 0:00:02 --:--:-- 1467k
Installing RVM to /Users/mike/.rvm/
Adding rvm PATH line to /Users/mike/.bashrc /Users/mike/.zshrc.
Adding rvm loading line to /Users/mike/.bash_profile /Users/mike/.zprofile.
* WARNING: You have RUBYOPT set in your current environment.
This may cause rubies to not work as you expect them to as it is not supported
by all of them If errors show up, please try unsetting RUBYOPT first.
# RVM: Shell scripts enabling management of multiple ruby environments.
# RTFM: https://rvm.io/
# HELP: http://webchat.freenode.net/?channels=rvm (#rvm on irc.freenode.net)
# Cheatsheet: http://cheat.errtheblog.com/s/rvm
# Screencast: http://screencasts.org/episodes/how-to-use-rvm
# In case of any issues run 'rvm requirements' or read 'rvm notes'
Installation of RVM in /Users/mike/.rvm/ is almost complete:
* To start using RVM you need to run `source /Users/mike/.rvm/scripts/rvm`
in all your open shell windows, in rare cases you need to reopen all shell windows.
# Mike Greiling,
#
# Thank you for using RVM!
# I sincerely hope that RVM helps to make your life easier and
# more enjoyable!!!
#
# ~Wayne
rvm 1.19.5 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.8/x86_64/ruby-2.0.0-p0.
Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies.
Installing requirements for osx, might require sudo password.
Skipping `brew update` make sure your formulas are up to date.
RVM autolibs is now configured with mode '2' => 'check and stop if missing',
please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
or visit https://rvm.io/rvm/autolibs for more information.
Missing required packages: automake, libtool, pkg-config, libyaml, readline, libxml2, libxslt, libksba, openssl, sqlite.
RVM autolibs is now configured with mode '2' => 'check and stop if missing',
please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
or visit https://rvm.io/rvm/autolibs for more information.
There were package installation errors, make sure to read the log.
Check Homebrew requirements https://github.com/mxcl/homebrew/wiki/Installation
RVM のインストールに失敗したためにデフォルトの Ruby インストールが失敗したのか、それとも homebrew 自体が何らかの形で破損しているのかはわかりませんが、可能であれば、homebrew と osx のネイティブ ruby インストールを再び機能させたいと考えています。
端末のPATH設定か何かに帰着するかもしれませんが、私はこれが初めてで、どこから始めればよいかわかりません。